Sound processing apparatus

Sound processing apparatus and method with fading effect

Sound signal output circuit and method

Sound system gain and equalization circuit

Sound system with rate controlled, variable attenuation

Sound volume controllable communication apparatus

Sound volume controlling apparatus

Speaker driving circuit

Speaker system

Speaker volume control apparatus and method

Speech processing system including an amplitude level control ci

Stable sound synthesizing circuit

Sticky leveler

Streaming normalization

Streaming normalization

Switch responsive to an audio cue

System and method for adjusting an audio signal

System and method for controlling audio output

System and method for digital volume control

System and method for electronic volume control of audio signals